The record of annual rainfall at a place is available for 25 years. Plot the curve of recur- rence interval vs annual rainfall magnitude and by suitable interpolation estimate the magnitude of rainfall at the station that would correspond to a recurrence interval of (a) 50 years and (b) 100 years. Annual Rainfall (cm) 113.0 94.5 Year 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 76.0 87.5 92.7 71.3 77.3 85.1 122.8 69.4 81.0 94.5 86.3 Year 1963 1964 1965 ENGG 1966 1967 1968 1969 1970 7 1971 1972 1973 1974 Annual Rainfall (cm) 68.6 82.5 90.7 99.8 74.4 66.6 65.0 91.0 106.8 102.2 87.0 84.0